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video: omap: add loop exit conditions to the dpll setup

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In case of null error, round rate is equal to target rate, so it is
useless to continue to search the DPLL setup parameters to get the
desidered pixel clock rate.

Signed-off-by: Dario Binacchi <dariobin@libero.it>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
This commit is contained in:
Dario Binacchi 2020-02-22 14:05:43 +01:00 • committed by Lokesh Vutla
parent 9aead9ae09
commit 9d7f53c1e5
1 changed files with 3 additions and 1 deletions
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4
drivers/video/am335x-fb.c
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@ -160,7 +160,7 @@ int am335xfb_init(struct am335x_lcdpanel *panel)
err = panel->pxl_clk;
err_r = err;
for (d = 2; d < 255; d++) {
for (d = 2; err_r && d < 255; d++) {
for (m = 2; m < 2047; m++) {
if ((V_OSCK * m) < (panel->pxl_clk * d))
continue;
@ -176,6 +176,8 @@ int am335xfb_init(struct am335x_lcdpanel *panel)
dpll_disp.m = m;
dpll_disp.n = n;
best_d = d;
if (err_r == 0)
break;
}
}
}